“…In Europe, the first HIV seroconversion in a hemophiliac patient is dated back to the end of 1979, when a British patient with inherited factor VIII deficiency received a clotting factor concentrate of US donor origin and subsequently developed an acute seroconversion illness. 11 Therefore, the vast majority of our patients most likely seroconverted to HIV in the years 1980 -1983. The time of HCV acquisition in our patients can be specified less precisely.…”